I doodled something that looked like a cross between a wedding cake and the Philadelphia city hall, then imported the black and white drawing into Photoshop and added color and pre-set patterns. I don't mind a touch of New Age glow or late 19th century holy carnival style. I don't even need feathery angels to trace the vision of lava-lamp heaven. The Bubble Tower is one of an endless number of lighthouses on the astral plane.
Technical pen ink on sketchbook page, enhanced and given a background in Photoshop, 5" x 7", July 2014. Cliquez for larger view.